Platform for timber-preserving cylinders



Demll, H923.

H. E. AUSTIN ET AL.

PLATFORM FOR TIMBER PRESERVING CYLINDERS Filed Dec. 8, 1.9223-Sheets-Sheet 1 b. 5 H0677 w ([5665 6. 6 00.

Dec. 11 H923. 11,47Z4Il-4 H. E. AUSTIN ET AL PLATFORM FOR TIMBERPRESERVING CYLINDERS Filed Dec. 8, 1922 5 Sheets-Sheet 2 Dec. 11,1923.1,4714% H. E. AUSTQN ET AL.-

PLATFORM FOR TIMBER PRESERVINCI CYLINDERS Filed ec. 5, 1.922 ssheets-Sheet? gwvemto zns atfto cm wg Patented Dec. 11, 1923.

entire atreaeetr ref-a.

HAROLD E. AUSTIN,"OF LOUISVILLE, KENTUCKY, AND JESSE G. COOK; OFJEFFERSON- VILLE, INDIANA, "ASSIGNORS TO AMERICAN CBEOSOTING COMPANY, OFLO'UIS- VILLE, KENTUCKY,'A CORPORATION OLE INDIANA.

PLATFORM FOR 'TIMBER-PRESERVING' CYLINDERS. I

Application filed" December a, 1922. Serial no. 605,727.

To all whom it may concern Be it known that we, I'IAROLD E. AUsTIN, ofLouisville, in the county of Jefferson, State of Kentucky, and Jesse C.Coon, of Jeffersonville, in the county of Clark, State of Indiana, haveinvented certainnew and useful Improvements in Platforms forTimber-Preserving Cylinders; and we do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable'others skilled in the art to which it appertains to make and usethe same.

In cylinders used in timber impregnation. and other arts where suchcontainers are subjected to high internal pressure the fastening of thedoors in a manner to prevent leak-age of the fluid under pressure andtin fastening the doors for discharge is attended with great diflicultybecause of the size of the doors used with such cylinders and the heavywrenches required for manipulating the fastening means. These cylindersbeing of a height requiring the operator to take an elevated position toget to the fastening elements, simple Wooden benches have heretoforebeen employed to that end, these benches being carried by hand to theplace where used and then, removed so that the door may be openedwithoutinterference. Such benches have, necessarily, been of substantialconstruction and of a weight making movement a difficult task. It is theobject of our invention to provide a simple and effective door platformwhich may readily be brought into position to allow the operator toreach the highest point of the cylinder door without undue exertion andafter fastening or unfa-stening the door be swung from its operativeposition to 'a point where it will not offer interference to the openingor closing movements of the door.

Figure 1 is a top plan view of the outer end of a wood impregnatingcylinder equipped with our improved platform. Figure 2 is a frontelevation and Figure 3 is a view in side elevation of the device.

Our invention comprehends the idea of so constructing a platform fortimber preserving cylinders and connecting it with such cylinders thatits different positions relative to the cylinder are controlled whollyby the weight of the different parts of the platform.

Uprights 1 and 2 are arranged ateach side of the cylinder A andconnected by a truss 3 so as to give a maximumrigidity thereto.Extending rearwardly from the upper portion of these uprights aremembers at upon which the deck 5 is supported. Beams 6 extend in anupwardly and rearwardly inclined direction from the uprights 1 and form,with the members 4, a triangular frame. Each beam preferably comprisestwo channel bars riveted together and reinforced at the point 7, whichis somewhat. removed from the longitudinal center of the beam, toreceive a stud 8 seated in a casting 9 which is riveted to the side ofthe cylinder, the beam being free to turn about said pivot. The forwardand longer portion of each beam beyond its connection with the cylinderis offset from the rear portion so as to give a greater span betweenbeams at the outer end. The rear end of each beam, which is the shorterend, has a weight 10 suspended therefrom which is: adapted tocounterbalance the parts when the platform is in a raised position.Additional support is given the deck timbers, especially those nextadjacent the cylinder head B, by angle irons 12 projecting divergentlyfrom the members 4, and we have shown short ladder lengths 18 each sideof the platform.

The adaptability of our improved platform is clearly manifest. In theposition shown in each of the figures of the drawings access may readilybe had from the platform to the highest point of the cylinder door forthe purpose of fastening or unfastening the bolts by which the door issecured to its cylinder and when this work is accomplished the platformis easily swung upwardly, but little force being necessary to lift it tothe point slightly beyond perfect balance so that the counterweight 10will overbalance the platform port-ion and main tain the latter inelevated position without danger of falling. The platform is as readilybrought into operative position by moving the counterweight upwardly.

'IVe claim as our invention:

1. In combination with a timber preserving cylinder, and a doortherefor, a. platform, and counterbalanced means for swinginglysupporting the platform for movement to and from the path of openingmovement of the door.

2. A hinged platform comprising pivotally mounted side beamscounterbalanced at one end, uprights connected to the opposite ends ofthe beams, a transversely arranged truss connecting the uprights, and aplatform supported by the truss, the beams and the uprights. p

3. lnvcombination with a timber preserving cylinder, a platformincluding side beams pivotally connected with oppositesides of saidcylinder, and means acting on said beams to overbalance the weight ofsaid platform in one position thereof, said platform movable across theend of the cylinder.

4. In combination with a timber preserving cylinder, a platformincluding support ing uprights, beams extending upwardly and rearwardlyfrom said uprights and having a ing cylinders, comprisingcounterbalanced beams adapted to be pivoted to the opposite sides of acylinder and offset outwardly at their outer end portions to provideclearance space for swinging over the forward end of the cylinder,uprights on the forward ends of the beams, a transverse truss bracinglyconnecting the uprights, deck supporting' members connecting the upperends of the uprights to their respective beams, and

a' deck on the supporting members.

6. A movable platform for timber preserv ing cylinders, comprising sidebeams adapted to be pivotally supported on a. cylinder,

uprights carried by the forward ends of the beams, deck-supportingmembers connecting the upper ends of the uprights to the respectivebeams, deck timbers supported bysaid members, and auxiliary supportingmeans for the deck timbers consisting of forwardly convergent membersconnected at one end to the deck supporting members and at theiropposite ends to one of the deck timbers.

In testimony whereof we have signed this specification.

HAROLD E. AUSTIN. v JESSE CI COOK.

